TY - JOUR
T1 - Iterative transceiver optimization for linear multiuser MIMO channels with per-user MMSE requirements
AU - Schubert, Martin
AU - Shi, Shuying
AU - Boche, Holger
PY - 2006
Y1 - 2006
N2 - We address the problem of jointly optimizing linear transmit and receive filters for a multi-user MIMO system, under the assumption that all users have individual Minimum-Mean-Square-Error (MMSE) requirements. Each user can perform spatial multiplexing with several data streams (layers). All users and layers are coupled by interference, so the choice of filters is intricately interwoven with the power allocation strategy. The design goal is to minimize the total power subject to MMSE constraints. This results in a non-convex problem formulation, for which we propose an iterative algorithm. The iteration consists of alternating optimization of powers, transmit filters and receive filters. We prove that the total required power obtained by the algorithm is monotonically decreasing and converges to a limit.
AB - We address the problem of jointly optimizing linear transmit and receive filters for a multi-user MIMO system, under the assumption that all users have individual Minimum-Mean-Square-Error (MMSE) requirements. Each user can perform spatial multiplexing with several data streams (layers). All users and layers are coupled by interference, so the choice of filters is intricately interwoven with the power allocation strategy. The design goal is to minimize the total power subject to MMSE constraints. This results in a non-convex problem formulation, for which we propose an iterative algorithm. The iteration consists of alternating optimization of powers, transmit filters and receive filters. We prove that the total required power obtained by the algorithm is monotonically decreasing and converges to a limit.
UR - http://www.scopus.com/inward/record.url?scp=84862604787&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:84862604787
SN - 2219-5491
JO - European Signal Processing Conference
JF - European Signal Processing Conference
T2 - 14th European Signal Processing Conference, EUSIPCO 2006
Y2 - 4 September 2006 through 8 September 2006
ER -